perf record: Remove -f/--force option

It no longer have any affect on the processing and is marked as obsolete
anyway.

Signed-off-by: Jiri Olsa <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Corey Ashford <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Frederic Weisbecker <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/n/[e-mail]
Link: http://lkml.kernel.org/r/[e-mail]
[ combined patch removing the -f usage in various sub-commands, such as 'perf sched', etc, by Namhyung Kim ]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Documentation/examples.txt

···
 well. For example the page allocations done by a 'git gc' can be
 captured the following way:
 
- titan:~/git> perf record -f -e kmem:mm_page_alloc -c 1 ./git gc
+ titan:~/git> perf record -e kmem:mm_page_alloc -c 1 ./git gc
  Counting objects: 1148, done.
  Delta compression using up to 2 threads.
  Compressing objects: 100% (450/450), done.
···
 allocations - to see precisely what kind of page allocations there
 are:
 
- titan:~/git> perf record -f -g -e kmem:mm_page_alloc -c 1 ./git gc
+ titan:~/git> perf record -g -e kmem:mm_page_alloc -c 1 ./git gc
  Counting objects: 1148, done.
  Delta compression using up to 2 threads.
  Compressing objects: 100% (450/450), done.

tools/perf/Documentation/perf-record.txt

···
 --no-delay::
 	Collect data without buffering.
 
--f::
---force::
-	Overwrite existing data file. (deprecated)
-
 -c::
 --count=::
 	Event period to sample.

tools/perf/builtin-kmem.c

···
 static int __cmd_record(int argc, const char **argv)
 {
 	const char * const record_args[] = {
-	"record", "-a", "-R", "-f", "-c", "1",
+	"record", "-a", "-R", "-c", "1",
 	"-e", "kmem:kmalloc",
 	"-e", "kmem:kmalloc_node",
 	"-e", "kmem:kfree",

tools/perf/builtin-lock.c

···
 static int __cmd_record(int argc, const char **argv)
 {
 	const char *record_args[] = {
-		"record", "-R", "-f", "-m", "1024", "-c", "1",
+		"record", "-R", "-m", "1024", "-c", "1",
 	};
 	unsigned int rec_argc, i, j;
 	const char **rec_argv;

tools/perf/builtin-record.c

···
 	int			realtime_prio;
 	bool			no_buildid;
 	bool			no_buildid_cache;
-	bool			force;
 	long			samples;
 	off_t			post_processing_offset;
 };
···
 			    "system-wide collection from all CPUs"),
 	OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu",
 		    "list of cpus to monitor"),
-	OPT_BOOLEAN('f', "force", &record.force,
-			"overwrite existing data file (deprecated)"),
 	OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"),
 	OPT_STRING('o', "output", &record.output_name, "file",
 		    "output file name"),

tools/perf/builtin-sched.c

···
 		"record",
 		"-a",
 		"-R",
-		"-f",
 		"-m", "1024",
 		"-c", "1",
 		"-e", "sched:sched_switch",

tools/perf/builtin-timechart.c

···
 {
 #ifdef SUPPORT_OLD_POWER_EVENTS
 	const char * const record_old_args[] = {
-		"record", "-a", "-R", "-f", "-c", "1",
+		"record", "-a", "-R", "-c", "1",
 		"-e", "power:power_start",
 		"-e", "power:power_end",
 		"-e", "power:power_frequency",
···
 	};
 #endif
 	const char * const record_new_args[] = {
-		"record", "-a", "-R", "-f", "-c", "1",
+		"record", "-a", "-R", "-c", "1",
 		"-e", "power:cpu_frequency",
 		"-e", "power:cpu_idle",
 		"-e", "sched:sched_wakeup",